Acta Phys. -Chim. Sin. ›› 1989, Vol. 5 ›› Issue (01): 1-2.doi: 10.3866/PKU.WHXB19890101

• Communication •     Next Articles

Resonance Enhance Multiphoton Ionization Spectra of OCS Molecule in the 277-285 nm Wavelength Region

Zheng Cheng-Fa;Liu yong;Yu Yong;Zheng Qi-Ke   

  1. Laser Chemistry Laboratory,Fudan University,Shanghai
  • Received:1988-09-20 Revised:1900-01-01 Published:1989-02-15
  • Contact: Zheng Cheng-Fa

Abstract: The first observation of the REMPI spectra of OCS molecule in the region of 277—285 nm is reported. The laser source is the pulse laser of Nd: YAG pumped tunable dye laser. The total ionization electric charges of OCS gas in the static cell is collected with the parallel electrodes connected to a boxcar averager. The power dependence shows the REMPI is resulted from the two photon resonant, three photon ionization. Comparing with the VUV absorption spectra, the main spectral lines in the REMPI spectra has been assigned preliminarily. The abnormal spectral line at 279.07 nm may be due to the MPI of oxygen atom produced from the photodissociation of OCS molecules.